A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6620-01-294-1044
NSN 5925-01-056-3548
NSN 4140-01-345-0302
NSN 5965-01-017-9156
NSN 5855-01-632-9530
NSN 6150-01-496-4050
NSN 5998-01-419-1246
NSN 6145-00-129-6200
NSN 5960-01-073-8454
NSN 6220-01-473-8472
NSN 5835-00-779-2836
NSN 5935-00-690-8078